[wp-hackers] Allow users to upload their own images - hook to use?

[Gregory Lancaster]

Yea a couple people on stack overflow told me the same about
insert_attachment returning the post ID of the attachment, that I dont
deny.  I just dont see how I can post it with the other form data.  Only
way I can think is a session.  I tried a variable within the value of the
input field but obviously that failed immediately since it has no value
until after the file is uploaded.


On Thu, Sep 12, 2013 at 11:32 AM, J.D. Grimes <jdg at codesymphony.co> wrote:

> Your insert_attachment() function returns the post ID of the attachment,
> so I'm not sure what the problem is...
>
> You don't need to attach the attachment to a post, so you should set
> $post_id to 0, and set the attachment's post_parent to 0 by passing in the
> $post_data parameter.
>
> Example:
>
> $post_id = 0;
> $post_data = array( 'post_parent' => 0 );
>
> $attach_id = media_handle_upload( $file_handler, $post_id, $post_data );
>
> On Sep 12, 2013, at 12:25 PM, Gregory Lancaster <greglancaster71 at gmail.com>
> wrote:
>
> > Im not sure how that would work.  Right now I am using a form I made,
> using
> > wpdb to drop it into my custom table.  But the file is handles by the
> > insert_attachment. It creates a post attachment, but I dont see a way to
> > link up the post attachment ID to my custom table since it all happens on
> > submit.
> >
> > My code:
> >
> >
> > ///FORM CODE///
> >
> >
> > <form name="log_data" method="post" action=""
> enctype="multipart/form-data"
> > onsubmit="setTimeout('location.reload()', 500);" />
> >  <input type="hidden" name="user_id" value="<?php echo $current_user->ID
> > ?>"/>
> >  <input type="number" step="any" class="form-control" placeholder="Value"
> > name="length" value="" />
> >  <br />
> >  <input type="number" step="any" class="form-control" placeholder="Value"
> > name="ground" value="" />
> >  <br />
> >  <label for="date">Week Of:</label>
> >  <input type="date" name="date" class="form-control" value="" />
> >  <br />
> > <input type="file" name="file" value="">
> >  <br />
> >  <input type="submit" name="submit" value="submit" class="btn
> > btn-primary"/>
> > </form>
> > </div>
> >
> > ///SUBMIT FORM CODE
> >
> > $post_id = NULL;
> > global $wpdb;
> > if ($_FILES) {
> >  foreach ($_FILES as $key => $value) {
> >    $newupload = insert_attachment($file, $post_id);
> >    // $newupload returns the attachment id of the file that
> >    // was just uploaded. Do whatever you want with that now.
> >
> >
> >
> >
> > if (isset($_POST['submit'])) {
> > $wpdb->insert(wp_jo_plugin_options, array (
> >    'user_id' => $_POST['user_id'],
> >    'length'  => $_POST['length'],
> >    'ground'  => $_POST['ground'],
> >    'date'    => $_POST['date'],
> > 'file' => $_FILES['file'],
> > ));
> >        }
> >    }
> > }
> >
> >
> > ///FILE HANDLING FUNCTION
> >
> > function insert_attachment($file_handler,$post_id,$setthumb='false') {
> >
> >  // check to make sure its a successful upload
> >  if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK) __return_false();
> >
> >  require_once(ABSPATH . "wp-admin" . '/includes/image.php');
> >  require_once(ABSPATH . "wp-admin" . '/includes/file.php');
> >  require_once(ABSPATH . "wp-admin" . '/includes/media.php');
> >
> >  $attach_id = media_handle_upload( $file_handler, $post_id );
> >
> >  return $attach_id;
> > }
> >
> >
> >
> >
> > On Thu, Sep 12, 2013 at 6:35 AM, J.D. Grimes <jdg at codesymphony.co>
> wrote:
> >
> >>
> >> On Sep 11, 2013, at 7:01 PM, BenderisGreat <greglancaster71 at gmail.com>
> >> wrote:
> >>
> >>> Wait this could be the answer to everything I need done.  You said I
> can
> >>> attach it to a post, so each users uploads would be associated to their
> >>> specific post.  If I am doing that is it also possible to associate the
> >> data
> >>> I am saving with my form to that post as well?  How would that be done?
> >>> custom fields or something?
> >>
> >> Yes, you can do that using post metadata AKA custom fields.
> >>
> >> http://codex.wordpress.org/Function_Reference/add_post_meta
> >>
> >>> Last followup question - how
> >>> would I take the post->id from the image upload and drop it into my
> >> table.
> >>> (so each entry is properly matched up with the correct image)
> >>
> >>
> >> The post ID is returned by wp_insert_attachment():
> >>
> >>
> >>
> http://codex.wordpress.org/Function_Reference/wp_insert_attachment#Return_Values
> >>
> >> So you would just need to use $wpdb->insert() with that post ID (if you
> >> are going to use the custom table instead of post meta).
> >>
> >> http://codex.wordpress.org/Class_Reference/wpdb#INSERT_rows
> >>
> >> _______________________________________________
> >> wp-hackers mailing list
> >> wp-hackers at lists.automattic.com
> >> http://lists.automattic.com/mailman/listinfo/wp-hackers
> >>
> > _______________________________________________
> > wp-hackers mailing list
> > wp-hackers at lists.automattic.com
> > http://lists.automattic.com/mailman/listinfo/wp-hackers
>
> _______________________________________________
> wp-hackers mailing list
> wp-hackers at lists.automattic.com
> http://lists.automattic.com/mailman/listinfo/wp-hackers
>